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sched/topology: Remove redundant dl_clear_root_domain call

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We completely clean and restore root domains bandwidth accounting after
every root domains change, so the dl_clear_root_domain() call in
partition_sched_domains_locked() is redundant.

Remove it.

Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Waiman Long <llong@redhat.com>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Waiman Long <longman@redhat.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lore.kernel.org/r/Z9MRtcX4tz4tcLRR@jlelli-thinkpadt14gen4.remote.csb
This commit is contained in:
Juri Lelli 2025-03-13 18:11:17 +01:00 committed by Peter Zijlstra
parent 2ff899e351
commit d735bab3d5
1 changed files with 1 additions and 14 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

15
kernel/sched/topology.c
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@ -2720,21 +2720,8 @@ void partition_sched_domains_locked(int ndoms_new, cpumask_var_t doms_new[],
for (i = 0; i < ndoms_cur; i++) {
for (j = 0; j < n && !new_topology; j++) {
if (cpumask_equal(doms_cur[i], doms_new[j]) &&
dattrs_equal(dattr_cur, i, dattr_new, j)) {
struct root_domain *rd;
/*
* This domain won't be destroyed and as such
* its dl_bw->total_bw needs to be cleared.
* Tasks contribution will be then recomputed
* in function dl_update_tasks_root_domain(),
* dl_servers contribution in function
* dl_restore_server_root_domain().
*/
rd = cpu_rq(cpumask_any(doms_cur[i]))->rd;
dl_clear_root_domain(rd);
dattrs_equal(dattr_cur, i, dattr_new, j))
goto match1;
}
}
/* No match - a current sched domain not in new doms_new[] */
detach_destroy_domains(doms_cur[i]);